 |
| |||
| drill bit roller cone; drill bit rolling cone; drilling bit roller cone; drilling bit rolling cone | |||
| коническая шарошка долота: 10 phrases in 4 subjects |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Oilfields | 6 |
|
| |||
| drill bit roller cone; drill bit rolling cone; drilling bit roller cone; drilling bit rolling cone | |||
| коническая шарошка долота: 10 phrases in 4 subjects |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Oilfields | 6 |